Sea bond structure for FPSOsuperstructure total segment during lightering

Abstract

The invention discloses a sea bond structure for FPSO superstructure total segment during lightering. The sea bond structure comprises a lighter, a superstructure total section, a plurality of wall enclosing sea binding members, a plurality of longitudinal sea binding members, a plurality of transverse sea binding members and two outer wall sea binding members. The superstructure total section comprises an enclosing wall, an inner wall and an outer wall, wherein the enclosing wall comprises a larboard enclosing wall, a starboard enclosing wall, a bow enclosing wall and a stern enclosing wall;the inner wall comprises a first to a thirteenth longitudinal inner walls and a first to a ninth transverse inner walls; and one surface of the outer wall is provided with outer wall vertical stiffeners at intervals. The superstructure total section is hoisted on the deck of the lighter in a manner that the starboard enclosing wall is towards the bow of the lighter, and the stern enclosing wall istowards the starboard of the lighter, and a sixth transverse inner wall is superposed with the central line of the hull of the lighter. The enclosing sea binding members, the longitudinal sea bindingmembers, the transverse sea binding members and the outer wall sea binding members are of channel steel with the length equal to 500 mm. The sea bond structure has the advantages that materials are saved, the manpower, time and cost can be reduced and requirements on transportation safety can be met.

Description

technical field [0001] The invention relates to a sea-state structure for lightering the superstructure general section of an FPSO. Background technique [0002] FPSO (Offshore Floating Production Storage Vessel) is a comprehensive large-scale offshore vessel that separates the extracted oil from oil and gas, treats oily sewage, power generation, heat supply, storage and transportation of crude oil products, and integrates personnel living and production command systems. Oil production base. The size of FPSO is huge, and the hull is generally 50,000 to 300,000 tons. In the early construction of FPSO, various production equipment, main power station and thermal station were installed on the deck after the hull structure was completed. It usually takes 20 months or more to build an FPSO. At present, FPSO construction has begun to adopt a modular production process, and the hull structure and superstructure can be constructed at the same time, so that the FPSO construction pe...

AI Technical Summary

Problems solved by technology

This method not only needs a lot of materials to make the tire frame, but also the tire frame is difficult to manufacture, and the special tire frame made is difficult to be used repeatedly. The quantity is large, and when it is removed at the destination, not only the fixed welds between the general section and the tire frame must be removed, but also the tire frame needs to be removed, so a lot of manpower, material resources and time costs need to be invested

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